Please help me on this question:

Choices are
1. (GC)(CB)/2
2. (CG)(AB)/2
3. (BC)(AC)/2
4. (CM)(AB)/2

2.  (CG)(AB)/2.

Step-by-step explanation:

Area of triangle BCA  = altitude * base / 2

= (CG)(AB)/2

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: